<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>

    <script>
        // 5、使用while循环实现  打印100以内的奇数 
        var num = 1
        while (num <= 100) {
            if (num % 2 != 0) {
                console.log(num)
            }
            num++
        }
    </script>
</body>

</html>